Mark Nygren, CFA

Research Analyst

Mark Nygren, CFA, is a research analyst on the U.S. growth and core equity team at William Blair Investment Management. In this role, he focuses on U.S. mid-cap healthcare companies. Before rejoining William Blair in 2025, Mark was a research analyst at Congress Asset Management. Before that, he was a research associate on the U.S. growth and core equity team at William Blair and a senior analyst at Discover Equity Partners. Mark is a CFA charterholder. He received a B.B.A in accounting and finance from the University of Wisconsin-Madison.

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Mark Nygren, CFA

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